Dometius of Byzantium (Greek: Δομέτιος; died 284) was bishop of Byzantium from about 272 to about 284.
[1] He was a brother of the Roman emperor Probus.
He converted to Early Christianity, and entered the clergy when he was baptised by the bishop of Byzantium Titus of Byzantium, whom he succeeded.
[2] He had two sons, Probus and Metrophanes, who later became bishops of the same city.
[3] This article about a bishop of the Early Church is a stub.